In RichFaces 4.5.0 a new EPVC was intorduced that exposed a bug in Mojarra (MyFaces is Ok).
This Mojarra issue was resolved in the following versions:
* JAVASERVERFACES-3157 fixed in 2.1.28 and 2.1.27.redhat-9
* JAVASERVERFACES-3151 fixed in 2.2.6 and 2.2.5-jbossorg-3
The public verifyJsfImplVersion method of this class can be used to inspect the runtime and ensure an
appropriately patched JSF implementation is present to work with the new EPVC